Gree DC Inverter Multi VRF Service Manual page 189

DC INVERTER MULTI VRF
2.4 Compressor overcurrent protection
Upon AC inverter startup overcurrent, the indicator will display the current protection.
Abnormal overcurrent error
If the compressor
wiring is correct
Yes
If the current value is
higher than the preset
value of protector
Yes
If the high voltage
of unit is normal
Yes
If the voltage is
normal
Yes
The communication resumes to normal
Current protection
If the voltage is
normal
Yes
Remove the
compressor cables
and restart
If overcurrent
protection
Yes
Module damaged. Replace
the module
No
Adjust the compressor wiring
No
Replace the overcurrent protector
No
Refer to high voltage protection
No
Contact the power supply company
No
Adjust the power parameters
No
Replace the compressor
Note: For DC VRF unit, it is not allowed to test
with compressor cable removed.
MAINTENANCE
186